Re: Combining several caps and MMC DC ratings

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>


But this has nothing to do with the manufacturer's ratings.  It has to do
with the vast experience with these capacitors among
tesla coilers around the world.  For these types of MMCs, it has been
acceptable to rate their DC ratings as the AC voltage.

For example, I have one MMC which is rated at 14400 VDC (9 caps in series at
1600V) with my 15kV NST.  I've been running this thing very frequently for
the past year and no sign of any failure.  Others also have similar
experiences with these type of capacitors.

Dan




 > Dan, All,
 >
 > The manufacturers don't see it this way though, hence the different
ratings
 > for AC and DC.  If you choose to disregard the specifications, don't
 > complain if they fail prematurely/
 >
 > Mark Stolz
 > Houston, TX
 > http://teslacoils4christ-dot-org
 >
 >
 > >Original poster: "Mccauley, Daniel H by way of Terry Fritz
 > ><teslalist-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
 > >
 > >
 > >Not in all cases.  When building capacitors using standard MMC (cornell
 > >dublier, ge 42ls), you can use the DC rating
 > >as the AC rating.  It depends on the type of capacitor.
 > >
 > >Dan
 > >
 > >
 > >Your idea is good, but your number of caps in series is low. 8Kv x 1.414
=
 > >11.31 Kv, or 6 capacitors in series. The capacitor must stand your peak
 > >voltage not your 8Kv RMS voltage.
 > >      Robert  H
 >
 >
 >
 >
 >
 >